Figure 4From: Evolution of sociality by natural selection on variances in reproductive fitness: evidence from a social beeCoefficient of variation (CV) of total brood weight versus the number of females per nest. Coefficient of variation (CV) corrected for small sample sizes of total brood weight versus the number of females per nest for the late spring (blue squares) and early summer (red circles) samples. There is a significant decrease in CV with increasing colony size.Back to article page